ONR OBS Facility at the Scripps Institution of Oceanography, University
of California, La Jolla, CA
ONR OBS Facility at the Scripps Institution of Oceanography, University
of California, La Jolla, CATo further Navy needs and to serve the broader scientific community, ONR supported the design and construction of the instruments and established instrument two centers; One at the Scripps Institution of Oceanography and the other at The Woods Hole Oceanographic Institution. Both centers maintain fleets of Ocean-Bottom Seismographs (OBSs) and associated equipment as a shared resource for use by the members of the scientific community (Jacobson and others, 1991). The facilities are operated on a self-supporting basis, with support from the marine programs of the National Science Foundation and the Office of Naval Research.
This is what they look like.
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| Figure 1. Elevation view of OBS | Figure 2. Plan view of OBS | OBS Launch | OBS Over Water |
Aug. - Nov., 1991: NOBS Northeast Pacific Ocean - LeRoy Dorman, SIO; Brian Lewis, U. Washington; Adam Schultz, U. Washington; J. Hildebrand, SIO
1998 Recording Teleseisms on the Sea-floor; an Example from the Juan de Fuca Plate , Bull. Seismol. Soc. Am. February, 1998
May 1992: Hess Deep - LeRoy Dorman, J. Hildebrand, P. Lonsdale, SIO
1996 Hess Deep Rift Valley Structure from Seismic Tomography , J. Geophys. Res, 22335-2235, 1996
1997 Topography can Affect Linearization in Tomographic Inversions , Geophysics, 62, 1797-1803, 1997.
Nov 1992 - Jan 1993: Southern EPR - Don Forsyth, Brown University
1996 Investigation of Microearthquake Activity Following an Intraplate Teleseismic Swarm on the West Flank of the Southern East Pacific Rise , J. Geophys. Res, 102, 459-475, 1997
May - June 1994: MUSE Juan de Fuca Ridge - J. Hildebrand, SIO
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Sept 1994 - Jan 1995: LABATTS- Lau Basin - LeRoy Dorman, J. Hildebrand, SIO; D Wiens, Washington U. |
| Depth extent of the Lau back-arc spreading center and its relation to subduction processes, Dapeng Zhao, Yingbao Xu, Douglas Wiens, LeRoy M. Dorman, John Hildebrand, Spahr Webb Science, 278, 254-257, 1997 abstract | |
| Modeling the Tonga Slab: Can Travel Time Data Resolve a Metastable Olivine Wedge? Keith D. Koper, Douglas A Wiens, LeRoy M. Dorman, John A. Hildebrand, Spahr C. Webb, J. Geophys. Res., 103,30,079-30,100, 1998 | |
| Seismic Attenuation Tomography of the Tonga Fiji Region Using Phase Pair Methods , Erich G. Roth, Douglas A. Wiens, LeRoy M. Dorman, Spahr C. Webb, John A. Hildebrand, J. Geophys. Res., 104, 4795-4809, 1999 |
June 1995 - July 1995: Adaptive Beach Monitoring (Cruise Report) - off Camp Pendleton, CA - W. Kuperman, W. Hodgkiss, LeRoy Dorman, K. Melville, G. Deane, G. D'Spain, SIO
Observations of land vehicle activity and other land-based sounds with offshore underwater acoustic arrays, G. L. D'Spain, L. P. Berger, W. A. Kuperman, W. S. Hodgkiss, L. M. Dorman, W. A Gaines, J. Acoust. Soc. Am. In review, 2000.
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Sept 1995 - May 1996: Mantle ELectromagnetics and Tomography (MELT) (TN061 Cruise Report) , Southern EPR - Don Forsyth, Brown University |
| 1998 Imaging the Deep Seismic Structure Beneath a Mid-Ocean Ridge: the MELT Experiment, T. M. S. Team, Science, 280, 1215-1218, 1998. abstract, full text in pdf | |
| 1998 Off-Axis Crustal Thickness Across and Along the East Pacific Rise Within the MELT Area, J. P. Canales, R. S. Detrick, S. Bazin, A. J. Harding, J. A. Orcutt, abstract, | |
| 1998 Shipboard Geophysical Indications of Asymmetry and Melt Production Beneath the East Pacific Rise Near the MELT Experiment, D. S. Scheirer, D. W. Forsyth, M. Cormier, K. C. Macdonald, abstract, | |
| 1998 Mantle Seismic Structure Beneath the MELT Region of the East Pacific Rise from P and S Wave Tomography D. R. Toomey, W. S. Wilcock, S. C. Solomon, W. C. Hammond, J. A. Orcutt, abstract | |
| 1998 Structure of the Upper Mantle Under the EPR from Waveform Inversion of Regional Events, S. C. Webb and D. W. Forsyth, abstract, | |
| 1998 Shear-Wave Splitting and Implications for Mantle Flow Beneath the MELT Region of the East Pacific Rise, C. J. Wolfe and S. C. Solomon, abstract, | |
| 1998 Mantle Discontinuity Structure Beneath the Southern East Pacific Rise from P-to-S Converted Phases Y. Shen, A. F. Sheehan, K. G. Dueker, C. de Groot-Hedlin, H. Gilbert, abstract, | |
| 1998 Phase Velocities of Rayleigh Waves in the MELT Experiment on
the East Pacific Rise
D. W. Forsyth, S. C. Webb, L. M. Dorman, Y. Shen Science, 280, 1235-1238, 1998. abstract, full text in pdf |
August 1996 - September 1996: STRATAFORM, Off Northern California - LeRoy
Dorman, SIO
A new benthic aqueous flux meter for very low to moderate discharge
rates, Michael Tryon, Kevin Brown, LeRoy Dorman, Allan Sauter, Deep
Sea Research, accepted, 2000.
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November, 1998 - May, 1999: Study of the Structure and Tectonics of
the South Shetland Trench and Bransfield Backarc using Ocean-Bottom Seismographs,
D. A. Wiens, U. Washington; LeRoy Dorman, SIO.
Images of antarctic operations. |
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September, 1999, December 1999, June 2000: Imaging the Seismogenic Zone with Geodesy and Seismology: A combined land-ocean transect in Costa Rica, T. H. Dixon, U. Miami; S. Schwartz, UCSC; LeRoy Dorman, SIO; P. Lundgren, JPL; M. Protti, OVISICORI. The marine work is integrated with the PAGANINI program of GEOMAR . |
LeRoy M. Dorman Scripps Institution of Oceanography, UCSD 9500 Gilman Drive La Jolla, CA 92093-0215 Voice: (619)534-2406 Fax: (619)534-6849 Email: ldorman@ucsd.eduThe Chief Engineer of the OBS program is:
Allan W. Sauter Scripps Institution of Oceanography, UCSD 9500 Gilman Drive La Jolla, CA 92093-0215 Voice: (619)534-3435 Fax: (619)534-6849 Email: asauter@ucsd.edu
